This method can cause UI unresponsiveness if invoked on the main thread.

[Zhou Hao]

Got the following error in Xcode console:

This method can cause UI unresponsiveness if invoked on the main thread. Instead, consider waiting for the -locationManagerDidChangeAuthorization: callback and checking authorizationStatus first.

In:

+ (INTULocationServicesState)locationServicesState
{
    if ([CLLocationManager locationServicesEnabled] == NO) {
        return INTULocationServicesStateDisabled;
    }
    else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined) {
        return INTULocationServicesStateNotDetermined;
    }
    else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied) {
        return INTULocationServicesStateDenied;
    }
    else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusRestricted) {
        return INTULocationServicesStateRestricted;
    }
    
    return INTULocationServicesStateAvailable;
}